Vitamin D3 dihydroxylase

Vitamin D3 dihydroxylase is a cytochrome P450 enzyme purified from the actinobacterium Streptomyces griseolus, with EC number and CYP Symbol CYP105A1 (Cytochrome P450, family 105, member A1), catalyses oxidation of cholecalciferol(vitamin D3) to calcitriol.